Posco develops new building technology that stacks up three floors at a time
South Korea’s leading steelmaker Posco unveiled a novel-concept building technology that can erect three floors at one go to dramatically save costs and time in constructing a building..
Posco said on Wednesday that Posco Box (P-Box) pillar and ledger beam bonding developed jointly with builders have been designated as new construction technology by the Ministry of Land, Infrastructure, and Transport.
P-Box pillar and ledger beam bonding technology – developed by Posco, Posco Engineering & Construction, Halla Corporation, Hanyang, Hoban Construction, and planning and engineering company P&Coms – is a method that connects horizontal reinforced concrete to P-Box steel pipe column filled with concrete.
Unlike the previous method of stacking up reinforced concrete by each floor, P-Box steel pipe column filled with concrete is 15 meters high, allowing builders to pile up three floors at a time, which significantly reduces construction period. The new technology also saves construction costs by up to 15 percent and reduces carbon emissions by more than 1.5 percent, the company said.
High performance steel for architecture 600 (HSA600) – a construction-use hot-rolled steel applied to P-Box – is one of Posco’s world top premium products that guarantees tensile strength of 600 megapascals (MPa), which minimizes deformation upon bending and welding. Posco is currently the only steelmaker that is capable of producing hot-rolled steel with tensile strength of over 600 MPa equipped with seismic performance.
Posco’s steel solution research institute that developed HSA600 said that it was able to successfully mass produce the technology material in a year after launching technology research based on its materials and technical skills. The P-Box bonding method was developed three years after that, providing solutions to the construction industry.
The P-Box bonding method that has been designated as new construction technology, meanwhile, will have 8 years of term of protection period. During this period, the land ministry will advise ordering organizations to place priority in applying the new technology and provide merits or additional points to builders upon contractor qualification evaluation.
The technology has already been applied to more than 11 buildings, including an attached parking lot at Shilla Seoul hotel in Jung District, central Seoul, city development business district and facility in Munjeong-dong, Songpa District, and new apartment complex in Hanam, Gyeonggi Province.
Posco, meanwhile, has developed two construction- and engineering-related technologies so far with five construction and three engineering firms, which all have been designated as new construction technologies
By Kang Gye-man and Lee Eun-joo
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